Which Sensors are Compatible with 2GIG?
Many sensors are compatible with 2GIG security panels. In addition to the 2GIG brand of wireless sensors, Honeywell 5800 Series sensors can be used as well.

Added:
November 17, 2017

What Happens to a Qolsys IQ Panel 2 When the Internet Goes Down?
A Qolsys IQ Panel 2 will appear unaffected when the internet goes down, as this connection is not supervised by the panel. This is because the system requires cellular communication for monitoring and remote services. The WIFI connection is more for convenience. Read on to find out more.